Optical projecting apparatus.



v A. o. ROEBUGK. OPTICAL 'PBOJEGTIIIG: APPARATUS.

APPLICATION FILED FEB. 11, 1909.

Patented Julie 10, 1913.

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f'zuerzfor uYZZ Z A. G. ROEBUOK. OPTICAL PRQJEGTING APPARATUS. APPLICATION IILED PEB.11, 1909.

Patented June 10, 1913.

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ALVAH C. ROEBUCK. OF CHICAGO. ILLINOIS, ASSIGN'OR TO THE ENTERPRISE OPTICAL MFG. CJMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

QITICAL PROJECTING APPARATUS.

Specification of Letters Patent.

Patented J une 10, 1913.

Application filed February 1i, 1 909. Serial No. 477,436.

To all whom it may concern:

Be it known that I, ALVAH G. Ronnuon, a citizen of the United States of America and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Optical Projecting Apparatus, of which the following is a specification. p

This invention relates to projecting apparatus, and more especially to multiple dissolving view stereopticons, and has for its objects: To provide a simple, durable and efiicient construction of a stereoptican apparatus adapted to refraet the light from a single source of illumination ina manner that the picture projected from each of the plurality of optical systems will appear on the same spot of the view screen "to insure proper'registration, and with which economy in the "operation of the equipment is attained 15y a decrease in the breakage of the lens when using illuminants of great strength. Also'to provide a structural arrangement and combination of parts where: by a double dissolving stereopticon, or a compound dissolving stereopticon composed of two stereoscopic series, are illuminated withthe same illuminant used in connection with a kinetoscopic projecting apparatus; all as will hereinafter more fully appear.

In the accompanying drawings :'F igure 1, is a plan view of a combined kinetoscope and'stereopticon embodying the present invention. Fig. 2, is a side elevation of the same with parts in section. Fig. 3, is a detail front elevation of the stereopticon mount of the duplex lens type. Figs. 4 and 5, are respective front and rear elevation of the series of condensing lens of the present system as adapted to a duplex lens stereop-- ticon. F ig. (3, is a vertical section of the same on line 0c-0c, Flg. 4. Fig. 7, IS a horizontal sectional elevation of the same on Fig. 8, 1s a front eleline (if-.12, Fig. 55. vation of a stcreopticon mount of the quadruplex type. Fig. 9, is a detail side view of the same. Fig. 10, is a detail elevation of the intermediate carrying plates of they quadruplex objectives aforesaid. Fig. 11, is a fragmentary elevation of the carrying frame for said objectives. Fig. 12. is afront elevation of the lens members ol the condenser for the aforesaid qurulruplov stereopticon. Fig. 1 is an axial St'ttllflll of the sa nt-.01! line 11: .l- Fig. 1:3.

' Similar numerals of reference indicate l ke parts 111 the several views.

Referring to the. drawi1'1gs,'2 are longilm dinal tracks, preferably of the rod for-in tracks and capable. of longitudinal adjustment thereon.

4 is the single lamp house of the present construction, mounted on the secondarv tracks 3, and capable of transverse movement thereon for the purpose hereinafter stated. 5 is an illuminating apparatus located within the lamp house in a vertically adjustable manner, and preferably of the electric arc type shown and hereinafter de-u scribed in detail.

6 is a kinetoscope of any usual construction, secured to the forward end of the base board 1, aforesaid.

7 is the carrying frame of the stereopticon objective 8, preferably secured by a lateral extension 7 to the side of the kinetoscope as shown in Figs. 1, 2 and 3. The stereopticon objectives above referred to may be of the duplex type illustrated-in Fig. 3, or the quadruplexor stereoscopic type illustrated in Fig. 8, as required in the varied applications of the present invention. In the present construction, the optical center of the stereopticon objective 8 is arranged in' a plane above the optical center of the kinetoscope 6, so that a clear space will be. provided above said kinetoscope objective and accessories, for the convenient lateral introduction and removal of the stereopticon slides during an exhibition of the same.

9 is a condenser arranged at the. forward end of the lamp house 4, with its optical axis in alinement with optical axis of the kinetoscope 6, and individual thereto.

10, is a companion condenser also carried at the forward end of the lamp house aforesaid, on a plane with the stereopticon objectives aforesaid and individual thereto.

In the present improvement the condenser S) for the kinetoscope will have the ordinary type of lens 9 shown in Figs. 6 and 7 while the condenser 10 for the stereopticon will be of the special construction now to be described :--11, are the inner group of lens members, and 12 the outer group of lens members, the spherical surfaces of which are in the usual adjacent relation, as shown. The inner group of lens members 11 comprise a planospherical lens member formed 4 in two sections separated by a diametric gap 13, in the type of stereopticon apparatus having duplex objectives, as illustrated in Figs 3, 4, 5, 6 and 7; while in the case of a stereopticon apparatus having quadruplex,

objectives, said group of innen lens members will be formed of four sections separated by diametric gaps 13 and 13 in right angle relation, as illustrated in Figs. 8, 12 and 13. In my preferred construction the spherical surfaces of said sections will have a common radius as shown more particularly in Figs.

7 and 13." The companion outer group of lens members 12 also consists of a series of counterpart sections, preferably of a planesphericalform, and also separated by a single gap 14, in a stereopticon apparatus having duplex objectives, .as shown in Figs. 3,

5 and 7; and by a pair of gaps in right angle relation, in an apparatus having quadruplex ob ectives, such last mentioned gaps corresponding with the gaps 13, and 13 above described. In the condenser lens system above described, the principal point of advantage, and wherein it dfifers from other systems of the same class, is a very simple and efiicient lens combination in which only two members are required for an individual set of .condenser lenses where the older individual sets of condenser lenses required at least three. In each of the present individual set of condenser lenses, the optical center of the spherical surface of the lens section next adjacent to the source of illumination is at apoint close to the edge of said section and in consequence the rays of objectives 8. As so combined the present individual sets of condenser lens members differ from the older sets of the same class in dispensing with an auxiliary prism in one instance, and with an auxiliary front condensing lens in another instance. j

The present arrangement affords economy both in the purchase and operation of the equipment, and the resulting decrease in the breakage of the lens whenusing illuminants of reat strength.

he ste'reopticon objectives are made adjustable on' their carryingframe in order forward face of the carrying frame 7, aforeelongated slots 19 and 20. The elongated slots 19 in the one plate are arranged in a vertical direction, while the elongated slots 20 in the other plate 16 are arranged in a horizontal directlon.

21 and 22 are adjusting screws by which limited adjustments in the directions above referred to are imparted to the respective carrier plates 15 and 16, and the objectives carried thereon. V

In the quadruplex type of stereopticon objectives illustrated in Figs. 8, 9-, 10 and 11, the upper pair of objectives-are mounted on individual carrier plates 23 and 24, which of the carrying frame 7 by screws 25 and horizontally elongated slots 26, and receive simultaneous adjustment in a horizontal plane by means of a right and left hand adjust-ing screw 27 as shown-in Fig. 8. The lower pair of said objectives are mounted on individual outer carrier plates 28,, which in plates 29, by screws 30 and vertically elongated slots 31, and receive individual vertij usting screws 32.

The intermediate carrier plates are mounted in turn on the'forward face of the car'- rying frame 7 by the aforesaid screws 30 and horizontally elongated slots 33 in said adjustment thereon, from the adjusting screws 34.

cal pedestal secured to the floor of the lamp house 4, aforesaid.- 36 is a vertically adjustable head having vertical: movement on the shank portion of vthe pedestal and 37 in proper relation to the different optical axes of the apparatus.

riers, mounted to slide upon the respective slideways 38'and 39, and rcceiving adjusting movements from the outside of the lamp .house 4, by individual shafts and hand 'the lighting art.

said, by attaching screws 17 and 18, and

in turn are mounted on the forward faces 7 turn are mounted on intermediate carrier cal adjustment by means of individual ad- The arc lamp 5- heretofore Referred to as the preferred illumlnatlng means, is of the following detail construction: 35 i's'a vert-i- Saidh'ead is in turn formed. with a horizontal'slidew'ay 38*and vertical slidew'ay 391for the carbon carriers of the lamp. 410 and 41 arethe carbon car'" and 16, which in turn are mounted on the carrying frame, and receive ahorizontal adapted to be secured thereto by a set-screw wheels 42 and 43, througlrany usual inter mediate operative connect1ons, common to In the present construction the lamp house 4, and the vertically adjustable illuminating means arranged within said lamp house, are shifted laterally to bring the illuminating means in alinement with either ance With its use in connection With the stereopticon or with the kinetoscope,

Having thus fully described my said in; ventionwhat I claim as new and desire to secure by Letters Patent,is: 1 In a stereopticon, the combination of a pairof stereopticon objectives and a condenser comprising a pair of inner planospherical lens members arranged side by side and having their optical centers adjacent to their adjoining edges, and a pair of outer lens members arranged side by side and having their optical centers in alinement with those of the stereopticon objectives respectively, substantially as set forth. 2. In astoreopticon, the combination of a pair of stcreopticon objectives and a condenser con'iprising'a pair of inner-pianospherical lens members arranged side by' side and separatedby a diametri-c gap and haying their optical centers adjacent to their adjoining edges, and, a pair of outer lensmembers arranged side by side and having their optical centers in alinement with those of the stereoptieonobjectives respectively, substantially-as set forth.

In a stereopticon. the combinationof-a pair of stereopticonobjectives and a condenser comprisinga pair of inner .planospherical lens members arranged side by side and having their optical centers adjacent to their adjoining edges, and'a pair of outer plano-spherical lens members arranged side by side and having their optical centers in alinement with those of the stereopticon objectives, substantially as set forth. I

4. In a stereopticon, the combination of a pair of stereopticon objectives and a condenser comprising a pair of inner planospherical lens members arranged side by side and separated by a diamctric gap and having their optical centers adjacent to their adjoining edges, and a pair of outer plano-spherical lens members arranged side by side and having their optical centers in alincment with thoseof the stereopticon objectives respectively, substantially as set forth.

5. In a stereopticon, the combination of a plurality of stereopticon objectives, and a condenser comprising a plurality of inner pl?!IlO-SPllQllCll lens members arranged side by side and having their optical centers adjacent to'their adjoining edges, and a plurality of outer lens members having their optical centers in alinement with those of the stcreopticon objectives respectively, sub stantially as set fort-h.

' (3. In a stereopticon, the combination of a plurality of stereopticon objectives, and a condenser comprising a plurality of inner plano-spherical lens members arranged side by side and separated by diametric gaps in right angle relation and having their optical centers adjacent to their adjoining edges, and a plurality of outer lens members having their optical, centers in alinement with thoseof the stereopticon objectives respectively, substantially as set forth."-

7. In a stereopt-icon, the combination of a plurality of stereopticon. objectives,- and a condenser comprising a plurality of inner piano-spherical lens members arranged side by side and having their optical centers adjacent to their adjoining edges, and a plurality of outer plano-spherical lens members having their optical centers in alinement with those of the stereopticon objcctives respectively, substantially asset forth.

8. In a stereopticon, the combination of a plurality of stereopticon objectives, and a. condenser comprising a plurality of inner plano-spherical lensvmembers arranged-side by side and separated bv diametric gaps in right angle relation and having their optical centers adjacent to their adjoining ends, and a plurality of outer plane-spherical lens members having their optical centers in 0 alinement with those of the stereopticon obforth.

'9. In a. stereopt-icon, the combination of a pair of objectives having limited adjustment to and from each other, and a condenser comprising a pair of inner plane-sphericallens members arranged side by side and having their optical centers ad acent to their jectives respectively, substantially as set adjoining edges, and a pair of outer'lens membcrs arranged side by side and having their optical centers in alinement with those of the stereopt-ico-n objectives respectively, substantially as set forth. g

10. In a stereopticon, the combination of 1 5 a pair of objectives having limited adjustmentto and from each other, and a condenser comprising a pair of inner plano-- spherical lPIlS'll'lOh'lbOI'S arranged side by side and separated by a diametric gap and having their optical centers adjacent to their adjoining edges, and a pair of outer lens members arranged side/by side and having their optical centers in alinementwith those substantiallyns set forth.-'

1.1. In a stereopticon, the combination ofa pair of objectives ha ving limited. adjust-- ment to and from each other, and a 60m," denser comprising a pair of inner plano 0,

of the stereopticon objectives respectively, 35

spherical lens members arranged lsidestereopt-icon objectives respectively, substanside and having their optical centers a jacent to their adjoining edges, and a pair of "outer .{pla'no-spherical lens members arrangedsitle by side-andhavingtheir 0 tical centers in alinement .with those 0 the tially as set forth.

-12. In a stereopticonpth'e combination of a pair of objectives having limitedadjustment to and from each-other, and a con-- 'denser comprising .a pair of inner planospherical lens members arranged side by side forth.

13. Ina stereopticonjtliecombination ofv a plurality of stereopticori objectives having limi ted adjustment to and from each other, an'd .a condenser comprising a plurality ofinner piano-spherical lens members .ar-'- ranged side by side and having their optical centers adjacent -to their ad oining edges, and-a plurality ofbuter lens members-arrangedside by side and having their optical centers inalinement with those of the stereiopticon objectives respectively, substantially as set forth. Y p

14. In a stereopticon, the combination of a plurality ofstereopt-iconobjectives having limited adjustment to and from eachgot-her,

and a condenser comprising a' plurality of inner plano-s pherical lens members arranged slde by side and separ'atedby diametric gaps 111 right angle relation and having their Codie not this patent mayv be obtained for optical centers'adjacent to-their adjoining edges, a'nda pluralit of outer len's members arranged-side by siv e and having t-heir op.-

tical centers in' alinement lthose of the stereopticon objectives respectively, substantially as set forth.

1-5. In a stereopt com't-he combination of a plurality of stereopticon'objectives having limited. adjustment to and ,from each other,

and a condenser comprisingaplurality of '1I1I18I' plane-spherical lens me'fmbers' arranged side by side and having their optical centers adjacent to their adjoining edges, an,d ,a plurality of outer planospherical lens members arranged side by side and having their optical centers in alinementwith those. of thestereopticon ob:

jectives (respectively, substantially as set fort-h.

16. In a stereopticonftlfe combinationiof, ,a plurality? of stereopticon ob ectives having limited I adjustment to and from each other, and a? condenser comprising ...a' plu ra'lity of. innerplano splierica1-lensmembers arranged side byjside' and separatedfby d al metricgaps in right' angle relation and having their 'opt-ical centers adjacent ,to their adjoining. edges, and -a plurality .Of. outer planospherical lens, members arranged side by. s de and having the r optical centers 1n forth.

Signed at Chicago, Illinois, this 21st day of January 1009.

ALVAH ROEBUOK.

Vitnesses:

:Ausnn M. EVAN ELMER E. FULTON.

five cents each, by aiidressing'the f Commissioner otlatentl, Washington, D. 0.

an alinement with those of the v stereopti canobject-ives, respectively, substantially as set 

